DE58907116D1 - Electronic ballast. - Google Patents

Electronic ballast.

Info

Publication number
DE58907116D1
DE58907116D1 DE89107955T DE58907116T DE58907116D1 DE 58907116 D1 DE58907116 D1 DE 58907116D1 DE 89107955 T DE89107955 T DE 89107955T DE 58907116 T DE58907116 T DE 58907116T DE 58907116 D1 DE58907116 D1 DE 58907116D1
Authority
DE
Germany
Prior art keywords
voltage
changes
mains
load
capacitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE89107955T
Other languages
German (de)
Inventor
Peter Krummel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Application granted granted Critical
Publication of DE58907116D1 publication Critical patent/DE58907116D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Rectifiers (AREA)
  • Inverter Devices (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Glass Compositions (AREA)
  • Furan Compounds (AREA)
  • Discharge Heating (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Organic Insulating Materials (AREA)

Abstract

In electronic ballasts, having invertors to which the mains AC voltage is fed via a rectifier voltage, use is made of at least one additional sine-wave correction capacitor. Known circuits of this type show a high dependency of the charge capacitor voltage to changes in the mains AC voltage and/or changes in the load of the load circuit, which result in serious operating disadvantages. It is proposed significantly to reduce this dependency of the charge capacitor voltage on mains AC voltage changes and/or load changes in that two clamping diodes (DBL, DBH), which are connected in series and whose polarity is opposite to that of the rectified AC voltage (UN), are connected in parallel with the invertor input, the common connecting point of which clamping diodes is likewise the output-side termination of the invertor (WR) which is common to the load circuit (LA) and the electrically effective bridging capacitor (CH). <IMAGE>
DE89107955T 1989-05-02 1989-05-02 Electronic ballast. Expired - Fee Related DE58907116D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89107955A EP0395776B1 (en) 1989-05-02 1989-05-02 Electronic ballast

Publications (1)

Publication Number Publication Date
DE58907116D1 true DE58907116D1 (en) 1994-04-07

Family

ID=8201316

Family Applications (1)

Application Number Title Priority Date Filing Date
DE89107955T Expired - Fee Related DE58907116D1 (en) 1989-05-02 1989-05-02 Electronic ballast.

Country Status (6)

Country Link
EP (1) EP0395776B1 (en)
JP (1) JP2690382B2 (en)
AT (1) ATE102428T1 (en)
DE (1) DE58907116D1 (en)
ES (1) ES2049772T3 (en)
HK (1) HK123195A (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992004808A1 (en) * 1990-08-31 1992-03-19 Siew Ean Wong Improvements in electronic ballasts
CA2056010C (en) * 1990-11-27 1997-05-27 Minoru Maehara Inverter device for stable, high power-factor input current supply
US5408403A (en) * 1992-08-25 1995-04-18 General Electric Company Power supply circuit with power factor correction
DE4237262A1 (en) * 1992-11-04 1994-05-05 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Circuit arrangement for high-frequency operation of a consumer
DE4238409A1 (en) * 1992-11-13 1994-05-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Circuit arrangement for operating low-pressure discharge lamps
ES2108201T3 (en) * 1993-01-12 1997-12-16 Philips Electronics Nv BALLAST CIRCUIT.
DE69313257T2 (en) * 1993-01-12 1998-02-19 Philips Electronics Nv circuit
CN1050493C (en) * 1993-01-16 2000-03-15 浙江照明电器总公司 High power factor electronic lamp with protector for abnormal condition
CN1049553C (en) * 1993-01-30 2000-02-16 皇家菲利浦电子有限公司 Ballast circuit
CN1054726C (en) * 1993-01-30 2000-07-19 皇家菲利浦电子有限公司 Circuit arrangement
US6037722A (en) 1994-09-30 2000-03-14 Pacific Scientific Dimmable ballast apparatus and method for controlling power delivered to a fluorescent lamp
US5821699A (en) 1994-09-30 1998-10-13 Pacific Scientific Ballast circuit for fluorescent lamps
US5691606A (en) 1994-09-30 1997-11-25 Pacific Scientific Company Ballast circuit for fluorescent lamp
ATE197654T1 (en) 1995-08-04 2000-12-15 Siemens Ag ELECTRONIC BALLAST WITH RUNNING CURRENT LIMITATION AND/OR OVERVOLTAGE PROTECTION
IE970157A1 (en) * 1996-03-06 1997-09-10 Tecninter Ireland Limited An electronic ballast for a compact fluorescent lamp
US5925986A (en) 1996-05-09 1999-07-20 Pacific Scientific Company Method and apparatus for controlling power delivered to a fluorescent lamp
CN1113583C (en) * 1996-09-24 2003-07-02 马士科技有限公司 Electronic ballast for fluorescent lamp
US5866993A (en) 1996-11-14 1999-02-02 Pacific Scientific Company Three-way dimming ballast circuit with passive power factor correction
US5798617A (en) 1996-12-18 1998-08-25 Pacific Scientific Company Magnetic feedback ballast circuit for fluorescent lamp
US6107753A (en) * 1998-12-18 2000-08-22 Philips Electronics North America Corporation Radio frequency electronic ballast with integrated power factor correction stage
CN2515919Y (en) * 2001-12-05 2002-10-09 马士科技有限公司 Adjustable light fluorescent lamp device using mached with silicon controlled PM light modulator
US7122972B2 (en) 2003-11-10 2006-10-17 University Of Hong Kong Dimmable ballast with resistive input and low electromagnetic interference
EP2104402A1 (en) * 2008-03-17 2009-09-23 Chuan Shih Industrial Co., Ldt. Electronic ballast for fluorescent lamps

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2124042B (en) * 1982-06-01 1986-10-01 Control Logic Reduction of harmonics in gas discharge lamp ballasts
JPS59128128A (en) * 1983-01-13 1984-07-24 Matsushita Electric Works Ltd Loading method
NZ209570A (en) * 1983-09-19 1988-03-30 Minitronics Pty Ltd Switching regulator
DE3667367D1 (en) * 1985-06-04 1990-01-11 Thorn Emi Lighting Nz Ltd IMPROVED POWER SUPPLY.
EP0307065A3 (en) * 1987-09-09 1989-08-30 Plaser Light Corp. Driving of discharge lamp

Also Published As

Publication number Publication date
ATE102428T1 (en) 1994-03-15
JPH02304896A (en) 1990-12-18
EP0395776A1 (en) 1990-11-07
EP0395776B1 (en) 1994-03-02
HK123195A (en) 1995-08-04
JP2690382B2 (en) 1997-12-10
ES2049772T3 (en) 1994-05-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee